In addition to tests 1 and 2, VDMA 24994:2024-08 describes a fire test with batteries in the cabinet which are experiencing thermal runaway. During thermal runaway, individual battery cells heat up, causing a chain reaction of events such as ignition, outgassing and deflagration. This results in temperatures over 700 °C inside the cabinet, remaining at this level for a longer period of time. • A worst-case scenario is created during this test, by combining commonly available battery cells1 into one battery and causing them to undergo thermal runaway by heating them. To successfully pass the test, the overall structure of the cabinet must withstand the complete reaction of the cells, and no flames or fragments may exit the cabinet. The cabinet is assigned type class I if it successfully passes this test. Note: Conformity with VDMA 24994:2024-08 can only be confirmed by a certificate issued by the ECB. This means that, in addition to successfully completing the test, the cabinet must successfully pass an initial audit of the production facility carried out by the ECB. Annual production audits then ensure an ongoing, high level of product quality. Type PRO and ULTRA safety storage cabinets have been successfully tested and certified in accordance with VDMA 24994:2024-08. Certification in accordance with VDMA 24994:2024-08 certified by: European Certification Body (ECB) GmbH, DAkkS accredited as a certification authority in accordance with ISO/IEC 17065 VDMA 24994 The GS test for safety storage cabinets used to charge and store lithium-ion batteries is the most comprehensive testing programme for products of this kind. In addition to a fire test based on EN 14470-1 with an adjusted maximum temperature increase of 100 K, it also includes a fire test from the inside based on EN 1363-2. Other, application-specific tests are conducted in addition to the fire testing: • A realistic simulation of waste heat generated during charging and the associated test of exhaust air. In order to prevent the inside of the cabinet from overheating during the intensive use of charging devices, the test simulates the interior of the cabinet when it is fully occupied by heat sources over a period of 10 h. • Safety-relevant mechanisms, like triggering a door hold-open device and ventilation flaps in case of a fire, are tested thoroughly. • Mechanical tests of doors/locking mechanism to ensure their durability over more than 80,000 cycles without wear. • Verification of smoke-tight design over a 90-minute period. The GS-certified ION-LINE ULTRA meets all of the described properties, and therefore offers the highest level of safety for charging and storing lithium-ion batteries. Award of the GS mark certified by: kiwa MPA Dresden GmbH, accredited certification authority in accordance with EN ISO/IEC 17065 (D-ZE-17819-01-00) EK5 / AK4 – ProdSG ››› Need more information? Please contact our expert team at a location near you! 3 4 1 Cylindrical NMC 8-1-1, or 9-0.5-0.5 cells with SOC >98% at the start of the test
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